NOTE:
Installation of the CVA 2 Check Valve Assembly with Option
A or B, serving a single,
"Most Distant Sink" will determine that the Timing
of the Re-Circulation System to be normally, quite satisfactory.
Installation
of the CVA 3 with Temperature Control provides both Timing
and Temperature control, if desired.
CVA
3 Check Valve Assembly is usually found necessary in cases
where a "Branch Off" of the main line is
discovered feeding a separate sink needing "Hot Water
on Demand" as shown in Option B.
CVA
1 Check Valve Assembly applicable only to Option C.